The Dust Filtration System with High Filter Efficiency is a two-stage electrostatic precipitator can be used for controlling dust and fine particles in any closed room, preferably but not necessarily fitted with window/split type air conditioners - electronic labs, mechanical precision assembly areas, standards room, metrology labs, pharmaceuticals, bio-tech labs etc. Powertech Pollution Controls Pvt. Ltd. Supplies Dust Filtration System with High Filter Efficiency. Powertech Pollution Controls Pvt. Ltd. Offers a range of filtration systems. The Dust Filtration System of model name DustKiller achieves a high level of dust control, with removal of around 80% of atmospheric dust levels existing in the enclosed area.